Spencer has attended her fair share of red carpet events to know for sure. While she’s been acting since the ’90s, her big break came in 2011 for the movie The Help. Since then, she’s shown up in movies like Insurgent and Hidden Figures and had a recurring role in the television series Mom.

So, when she said that her biggest style disaster included shapewear, we had to listen up.

“Ladies, it’s not worth it,” she said at the festival. “We don’t even [need to] say what underwear it is. Just don’t wear too much of it.”